Adobe Premiere Pro CS6 - Manual (Page 183)

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Vectorscope
A. Target boxes B. Image profile
The Vectorscope has the following controls:
Intensity Adjusts the brightness of the pattern display. It does not affect the video output signal.
75% Default position. Use to check video input in which standard 75% intensity bars, like those in Premiere Pro, are used.
100% Shows the entire range of video signal chrominance. Use with video input containing 100% intensity bars.
YC Waveform
The YC Waveform displays a graph showing the signal intensity in the video clip. The horizontal axis of the graph corresponds to the video image
(from left to right) and the vertical axis is the signal intensity in units called IRE (named for the Institute of Radio Engineers).
The YC Waveform displays luminance information as a green waveform. Bright objects produce a waveform pattern (bright green areas) near the
top of the graph; darker objects produce a waveform toward the bottom. For NTSC video in the United States, luminance levels should range from
7.5 to 100 IRE (sometimes referred to as the legal broadcast limit). Japan’s implementation of NTSC standards permits a luminance range from 0
to 100 IRE. Generally, luminance and chroma values should be about the same and distributed evenly across the 7.5 to 100 IRE range.
The YC Waveform also displays chrominance information as a blue waveform. The chrominance information is overlaid upon the luminance
waveform.
You can specify whether the YC Waveform displays both luminance and chrominance information, or just luminance information. For a video on
reading a waveform monitor, see
www.adobe.com/go/vid0238 .
YC Waveform with the chroma control enabled
A. IRE units B. Luminance (green) waveform C. Chrominance (blue) waveform D. Range of signal components
The YC Waveform has the following controls:
Intensity Adjusts the brightness of the waveform display. It does not affect the video output signal.
Setup (7.5 IRE) Displays a waveform that approximates the final analog video output signal. Deselecting this option displays the digital video
information.
Chroma Displays both chrominance in addition to luminance information. Deselecting this option displays only the luminance.
YCbCr Parade
The YCbCr Parade scope displays waveforms representing levels of the luminance and color difference channels in the video signal. The
waveforms appear in a graph one after another.
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